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Geoinformatics & Geostatistics: An OverviewISSN: 2327-4581

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Research Article, Geoinfor Geostat An Overview Vol: 2 Issue: 2

Influence of Rock Foliation on Fracture Permeability: The Case of Precambrian metamorphics (Purulia, Eastern India)

Tapas Acharya1*, Rajesh Prasad1,3 and Chakrabarti S2
1Department of Geology, Hooghly Mohsin College, (University of Burdwan), Chinsurah-712101, India
2Department of Applied Geology & Environmental Systems Management, Presidency University, 86/1 College Street, Kolkata-700073, India
3Present Address: Geological survey of India, Raipur, India
Corresponding author : Tapas Acharya
Department of Geology, Hooghly Mohsin College, University of Burdwan, Chinsurah-712101, India
Tel: +91 9432593832;
E-mail: [email protected]
Received: December 23, 2013 Accepted: May 24, 2014 Published: June 04, 2014
Citation: Acharya T, Prasad R, Chakrabarti S (2014) Influence of Rock Foliation on Fracture Permeability: The Case of Precambrian metamorphics (Purulia, Eastern India). Geoinfor Geostat: An Overview 2:2. doi:10.4172/2327-4581.1000119

Abstract

Influence of Rock Foliation on Fracture Permeability: The Case of Precambrian metamorphics(Purulia, Eastern India)

Hydrological influence of foliation in variably fractured Precambrian metamorphic rocks is usually difficult to predict. As an exemplar, the Precambrian metamorphic exposed in and around the Balarampur town of Purulia district, West Bengal (India) were studied to find out the influence of rock foliation on fracture permeability using a hydrostructural domain-based model. These Precambrian metamorphic rocks, characterized by foliated fabric, resulted from the combination of (a) brittle granite gneisses rich in quartz and garnet, (b) an intense brittle-ductile shear zone, and (c) ductile metapelites with micaceous minerals. Pre- and post-monsoon depth-to-groundwater table contour maps, mode, coefficient of variance (Cv) and contour maps of frequencies and apertures of fractures demonstrate inter- and intra-domain variable qualitative fracture permeability’s.

Keywords: Fractured rocks; Foliation; Fracture frequency; Aperture; Fracture permeability; Metamorphic rocks.

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